Lyman MSR Ammo Checker Block — Multi-Caliber

Description

Lyman MSR Ammo Checkers are machined from 6061 T6 aircraft grade aluminum and finished with a black anodize to match MSR-style rifles. Each checker is cut with tooling to minimum chamber dimensions so you can verify that loaded rounds and purchased ammunition will chamber smoothly. The gauge covers a range of modern sporting rifle calibers commonly used in AR-pattern platforms.

Key Specifications

• The product type is Ammo Checker.
• The material is 6061 T6 aircraft grade aluminum.
• The finish is black anodized.
• Covered calibers include 223/5.56, 6.5 Grendel, 6.8 Rem. SPC, 7.62×39, 300AAC Blackout, 450 Bushmaster, 458 SOCOM, 50 Beowulf.
• Manufactured using CNC machining to minimum chamber dimensions.
• Intended use is to confirm ammo will chamber smoothly.
• The listed cartridge compatibility is Universal.
• The listed weight is 0.93.

This precision-machined checker provides a straightforward way to inspect chamber fit and ammunition consistency for MSR calibers. Its durable aluminum construction and accurate machining make it a practical tool for range maintenance checks, ammunition sorting, and routine equipment inspections.